Question

In the formula A=1/2h•b solve for b

Answer 1

hello

to solve this problem, we'll make b the subject of formula

`a=(1)/(2)h* b`

step 1

multiply both sides by 2

this is done so as to eliminate 1/2 on that side of the equation

`\begin{gathered} a=(1)/(2)h* b \\ 2* a=2*((1)/(2)hb) \\ 2a=hb \end{gathered}`

step 2

divide both sides by h

this done to make b the subject of formula

`\begin{gathered} 2a=hb \\ \text{divide both sides by h} \\ (2a)/(h)=(hb)/(h) \\ b=(2a)/(h) \end{gathered}`

therefore, b = 2a / h